INSTRUMENT FOR ANALYSIS OF COLLOIDAL LIQUIDS AND SOLS Russian patent published in 2008 - IPC G01N21/85 

FIELD: physics, measurement.

SUBSTANCE: instrument for analysis of colloidal liquids and sols contains source of light and the following components installed along the direction of emission: condenser, light filter with different coefficient of transmission, reservoirs for analysed medium, photodetector that is connected with registering device via measuring circuit. Emission with different length of light wave (colour) with the help of light guide that is optical fibre, integral from the side of beams entry butt end and then fork-shaped bifurcated, is introduced into two lightproof and shaded form inside cups of instrument detectors, which have identical dimensions and volumes, below the bottom, and on top - covers with fixing brackets for tips of every branch of bifurcated light guide and micrometers. Holes are provided along generatrix on top and bottom of cups for analysed liquid entry into sensors and air exhaust during sensors submersion into reservoirs, on internal surface of covers segments of annular photodetectors are installed with transparent rings of their protection against analysed medium, which perceive level of scattering of emission by lateral surface of complete straight annular cone of Faraday-Tyndall. Value of linear displacement is measured with micrometers of clock type, leg of which rests on rocker. Electric value of emission scattering intensity in colloidal liquid is determined by two electric measuring instruments separate for every sensor, which are connected to the third one according to bridge circuit, which has zero in the middle and potentiometer, which is used in calibration of instrument according to liquid standard in both reservoirs by installation of pointer at zero with further replacement of standard liquid for analysed one in one of the reservoir. Extent of liquid correspondence to standard liquid is estimated by value of pointer deviation from zero to one side or the other. Quantitative and qualitative content is determined by adjustment of instrument according to standard medium and earlier available weight percent or volume content of ingredients, selection of light filters and their combinations.

EFFECT: simplification of analyses of colloidal liquids and sols.

1 dwg